Investment and Other Income (Loss), Net (Tables)

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Summary of Investment and Other Income (Loss), Net

Investment and other income (loss), net consisted of the following:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollars in thousands)	2020		2019		2020		2019
Gain (loss) on equity securities	$	70,683	$	(42,693)	$	11,604	$	(4,568)
Investment and other income, net	2,092		2,165		5,124		4,348
Total investment and other income (loss), net	$	72,775	$	(40,528)	$	16,728	$	(220)